/
analyse_ruler.go
72 lines (58 loc) · 1.45 KB
/
analyse_ruler.go
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package commands
import (
"context"
"encoding/json"
"os"
"sort"
log "github.com/sirupsen/logrus"
"gopkg.in/alecthomas/kingpin.v2"
"github.com/grafana/cortex-tools/pkg/analyse"
"github.com/grafana/cortex-tools/pkg/client"
)
type RulerAnalyseCommand struct {
ClientConfig client.Config
cli *client.CortexClient
outputFile string
}
func (cmd *RulerAnalyseCommand) run(k *kingpin.ParseContext) error {
output := &analyse.MetricsInRuler{}
output.OverallMetrics = make(map[string]struct{})
cli, err := client.New(cmd.ClientConfig)
if err != nil {
return err
}
cmd.cli = cli
rules, err := cmd.cli.ListRules(context.Background(), "")
if err != nil {
log.Fatalf("unable to read rules from cortex, %v", err)
}
for ns := range rules {
for _, rg := range rules[ns] {
err := analyse.ParseMetricsInRuleGroup(output, rg, ns)
if err != nil {
log.Fatalf("metrics parse error %v", err)
}
}
}
err = writeOutRuleMetrics(output, cmd.outputFile)
if err != nil {
return err
}
return nil
}
func writeOutRuleMetrics(mir *analyse.MetricsInRuler, outputFile string) error {
var metricsUsed []string
for metric := range mir.OverallMetrics {
metricsUsed = append(metricsUsed, metric)
}
sort.Strings(metricsUsed)
mir.MetricsUsed = metricsUsed
out, err := json.MarshalIndent(mir, "", " ")
if err != nil {
return err
}
if err := os.WriteFile(outputFile, out, os.FileMode(int(0666))); err != nil {
return err
}
return nil
}